Unyielding Gatekeeper lets you exile another nonland permanent when its turned faced up
Welcome to the latest installment of Mana Math, where I take a bunch of facts and figures that Wizards dumps on us and I turn it into a simple, understandable answer to the burning question: How hard is it to get the cards we want
Cloud, Midgar Mercenary has quickly become one of the best Voltron commanders, while the Job Select mechanic cards like Red Mage's Rapier, Black Mage's Rod, and Machinist's Arsenal have all seen play, and all benefit from having Halvar, God of Battle in the deck to give them double strike
You then win through something like Rolling Thunder or Kaervek's Torch and your copious amount of colorless mana
Normally, on a legendary creature, this is very bad, but The Master planned ahead with this and comes with a fun anti-legend rule clause, letting you have as many token copies of it as you like